I think you are quite safe, irrespective of whether the lady used the condom as described/feared. I think the risk of HIV in this istuation is zero to inconsequential. Perhaps not the most hygienic way forward but I do not believe it presents a risk or threat to you.
I hope that helps?
best regards, Sean
the anal fingering was rather vigorous, i am afraid if she used the same condom that entered her vagina that there is a chance of infection here.